Colgate sensitive pro relief Receding gums can expose microscopic channels that lead to the tooth's centre. When your teeth make contact with something hot/cold/sour/sweet, sensations are carried by these channels directly to the centre causing sensitivity With its clinically proven pro-argin formula, Colgate Sensitive Pro Relief works by plugging the channels to block the tooth sensitivity With regular use CSPR builds a long lasting protective barrier that acts like a seal against sensitivity For instant relief, apply directly to the sensitive tooth with finger tip and massage gently for 1 minute India's No. 1 sensitivity toothpaste recommended by dentists